On the quantum-field description of many-particle Bose systems with spontaneously broken symmetry
Statistical Mechanics
2013-06-11 v1
Abstract
A quantum-field approach to studying the Bose systems at finite temperatures and in states with spontaneously broken symmetry, in particular in a superfluid state, is proposed. A generalized model of a self-consistent field (SCF) for spatially inhomogeneous many-particle Bose systems is used as the initial approximation. A perturbation theory has been developed, and a diagram technique for temperature Green's functions (GFs) has been constructed. The Dyson's equations joining the eigenenergy and vertex functions have been deduced.
Keywords
Cite
@article{arxiv.1306.2103,
title = {On the quantum-field description of many-particle Bose systems with spontaneously broken symmetry},
author = {Yu. M. Poluektov},
journal= {arXiv preprint arXiv:1306.2103},
year = {2013}
}
Comments
14 pages, 5 figures